John lynch



(No Model.)

J. LYNCH.

TERRA GOTTA CONSTRUCTION.

Patented NOWlZ, 1889.

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IllXIIIIIIIIIIII/IIIIIII/IIIIIIIIIIIIIIIIIIIIIIIIIIIIIAl'n'rpa N. PETER PhuluLilMgr-lphur. Withingfon, D. C.

UNITED STATES PATENT OFFICE.

JOI IX LYNCH, OF VASHINGTON, DISTRICT OF COLUMBIA.

TERRA-GOTTA CONSTRUCTION.

SPECIFICATION forming part of Letters Patent No. 414,716, dated November 1 2, 1889. Application filed March 28, 1889- Serial No. 305,199- (No model.)

To all whom it may concern:

Be it known that 1, JOHN LYNCH, a citizen of the United States, residing at Vashington,

proof floor-supports, having forits object the provision of simple and highly efficient means for readily and easily constructing the support between the floor and roof girders without the necessity of a temporary frame-work during the formation thereof, as is now in vogue. The invention is also equally applicable for wall-copin g to protect and strengthen the joints. v

The invention comprises the peculiar construction and arrangement substantially as hereinafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in perspective of a floor or roof support constructed in accordance with my invention. Fig. 2 is a longitudinal sectional view. Fig. 3 is a similar view with the sections extended.

In floor and roof arches or supports as heretofore constructed it was necessary to build a temporary frame-work during the formation of the arch or support until the key-piece should be inserted to firmly bind the parts.

By means of my invention the floor or roof support is readily and 'quickly constructed without such temporary fram e-work, the workman standing on a portable staging to put the pieces together.

Referring to the drawings, A A designate the ordinary girders, of approximately I sh ape in cross-section, and between these girders the floor or roof support is disposed.

B B are two end sections or blocks, of any material, preferably terra-cotta, the same being made hollow. The inner opposite ends of these sections or blocks B B are provided with grooves or recesses 19 b, terminating 'at their inner ends in shoulders 12 b. The section or block B is provided in its upper portion with a narrow slot or opening 19 extending nearly the distance of the groove or recess b.

C is an intermediate connecting section or block, designed to fit within the grooved or recessed ends of the sections or blocks B B, the movement of said connecting-sections being limited by the shoulders Z). These shoulders, while of great service are not absolutely essential. The same result can be obtained by forming holes in which may be dropped a nail or small terra-cotta plug to hold the intermediate section C in place until the cement hardens.

In practice the end sections are connected together by the sections C, and the outer end of one of the end sectionssay B-is placed between the upper and lower flanges of the girder A, and since the minimum conjoint length of the sections is less than the distance or space between the girders the outer end of the section B can be brought down heneath the upper flange of the girder A, after which the sections are extended a short distance and said section B" will bear against the web of the girder A and be held between the upper and lower flanges thereof. Thus it will be seen that the intermediate connecting section or block C permits the adjustment of the length of the end sections, whereby they can be readily and easily placed in position between the girders. After the sections or blocks are thus disposed they are firmly held in position by placing cement through the slotor opening 12 which will securely unite the end section B and the inter: mediate or connecting section C.

It will be observed that the method of constructing long terra-cotta pieces herein described may be employed for other purposes than floor construction-for example, for 1 terra-cotta in longlengths; but by this method long pieces for whatever purpose desired can justable sections or blocks of terra-cotta, one be built up that will be as strong at the joints of which sections or blocks has anupper slot as at any intermediate point. or opening, and the intermediate section or I claim as my invention block, substantially as set forth. I5 5 1. A floor or roof support composed of ad- In testimony whereof Iaffix my signature in justable sections or blocks provided with inpres ence of two witnesses. ner "rooved ends one of which sections or 1 T bloolzs has an upper slot or opening, and the JOHL LYNCH intermediate section or block, substantially Witnesses: [O as set forth. G. Y. ATLEE,

2. A floor or roof support composed of ad- STORY B. LADD. 

